2. PLIOCENE[ 43 PIC.]

         3. MIOCENE[ 35 PIC.]

         4. EOCENE[ 55 PIC.]

         5. PALEOCENE[ 33 PIC.]

            6. SENONIAN[ 78 PIC.]

         7. TURONIAN[ 81 PIC.]

         8. CENOMANIAN[ 141 PIC.]

            9. ALBIAN[ 53 PIC.]

            10. APTIAN[ 25 PIC.]

            11. JURA[ 32 PIC.]

        12. TRIAS[ 25 PIC.]

           13. PERMIAN,CARBONIFEROUS,DEVONIAN
                  SILURIAN,ORDOVICIAN

        14. CAMBRIAN[  38 PIC.]

          15. PRECAMBRIAN   [22 PIC.]
 

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